Why would it matter if people in Berlin pay more than people in Munich, or vice versa? Energy policies are generally national, so national data is the correct level of granularity.
Most of your criticisms seem to stem from a lack of understanding as to what the word "average" means.
And they already have a chart that adjusts for average wages as well.
So nothing whatsoever here strikes me as misleading or propaganda. Averages are a totally legitimate comparison tool between countries.
I'm actually curious just what you imagine this could even be "propaganda" for. Because it seems like just an incredibly fact-based neutral overview to me. I don't see any agenda at all, unless there's a sentence or paragraph I missed?
Except that that's definitely not what's shown here.
> I'm actually curious just what you imagine this could even be "propaganda" for
I did end the post with just that.
* Price differences during day/week/seasons. Cold day? Electricity can be 2-3x higher than the day before. Lots of sun/wind? Price plummets. ...
* Price differences in regions. Norway, Sweden, Germany, those alone have huge differences in electricity prices depending on where you live.
* Pricing relative to economic output, i.e. GDP. Or household income.
There are surely more. This really strikes me as a propaganda page as the data is too oversimplified to be usefulfor real discussions, but enough to point to it to further an agenda. ("See, we shouldn't have turned off those nuclear plants, see how expensive electricityhas become!")